CN108274870A - A kind of three layers of isolation film of nonhazardous and preparation method thereof - Google Patents
A kind of three layers of isolation film of nonhazardous and preparation method thereof Download PDFInfo
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- CN108274870A CN108274870A CN201810050932.5A CN201810050932A CN108274870A CN 108274870 A CN108274870 A CN 108274870A CN 201810050932 A CN201810050932 A CN 201810050932A CN 108274870 A CN108274870 A CN 108274870A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/32—Layered products comprising a layer of synthetic resin comprising polyolefins
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
- B29D7/00—Producing flat articles, e.g. films or sheets
- B29D7/01—Films or sheets
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/06—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/30—Layered products comprising a layer of synthetic resin comprising vinyl (co)polymers; comprising acrylic (co)polymers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B3/00—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar form; Layered products having particular features of form
- B32B3/02—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar form; Layered products having particular features of form characterised by features of form at particular places, e.g. in edge regions
- B32B3/08—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar form; Layered products having particular features of form characterised by features of form at particular places, e.g. in edge regions characterised by added members at particular parts
- B32B3/085—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar form; Layered products having particular features of form characterised by features of form at particular places, e.g. in edge regions characterised by added members at particular parts spaced apart pieces on the surface of a layer
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B3/00—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar form; Layered products having particular features of form
- B32B3/26—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar form; Layered products having particular features of form characterised by a particular shape of the outline of the cross-section of a continuous layer; characterised by a layer with cavities or internal voids ; characterised by an apertured layer
- B32B3/266—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar form; Layered products having particular features of form characterised by a particular shape of the outline of the cross-section of a continuous layer; characterised by a layer with cavities or internal voids ; characterised by an apertured layer characterised by an apertured layer, the apertures going through the whole thickness of the layer, e.g. expanded metal, perforated layer, slit layer regular cells B32B3/12
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B33/00—Layered products characterised by particular properties or particular surface features, e.g. particular surface coatings; Layered products designed for particular purposes not covered by another single class
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
- B32B7/04—Interconnection of layers
- B32B7/12—Interconnection of layers using interposed adhesives or interposed materials with bonding properties
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2307/00—Properties of the layers or laminate
- B32B2307/50—Properties of the layers or laminate having particular mechanical properties
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2457/00—Electrical equipment
- B32B2457/10—Batteries
Abstract
The invention discloses a kind of three layers of isolation films of nonhazardous and preparation method thereof, including base material, the top layer of the base material is fixed with high-density polyethylene layer, the high-density polyethylene layer top is fixed with adsorption layer, the bottom of the base material is fixed with propylene/ethylene copolymer layer, run through in the base material and be equipped with through-hole, and hollow out is equipped with air cavity in base material, the air cavity is interior filled with gas.Base material of the acrylic resin as isolation film is used in the present invention, on the basis of ensureing that isolation film is flexible, ensures its intensity；It can ensure it in hot pressing and the bond properties of base material by the adhesive strip structure of high-density polyethylene layer and propylene/ethylene copolymer layer, ensure stability；It is slotted respectively to base material top surface and bottom end by hot press in the present invention, ensures efficiency when batch production.
Description
Technical field
The present invention relates to isolation film production technical field, specially a kind of three layers of isolation film of nonhazardous and preparation method thereof.
Background technology
Lithium ion battery is usually mainly made of anode, cathode, isolation film, electrolyte and battery case.Lithium ion battery
In structure, isolation film is one of the interior layer assembly of key.The main function of isolation film is to separate the positive and negative electrode of battery,
It prevents positive and negative anodes to be in direct contact short circuit, while also so that electrolyte ion is passed through in battery charge and discharge process, shape
At electric current, when battery operating temperature is abnormal raising, the migrating channels of electrolyte ion are closed, cut-out electric current ensures battery
Safety.It can be seen that the performance of isolation film determines the interfacial structure of battery, internal resistance etc., capacity, the cycle of battery are directly affected
And the characteristics such as security performance, the isolation film haveing excellent performance play an important role the comprehensive performance for improving battery.City at present
The lithium ion battery isolation film sold generally uses microporosity and porous film, material to be placed in inside battery core just based on PP, PE
Between cathode, this isolation film strength and security performance are poor, and in the long-term use, isolation film will produce
Malicious particle, thus it is proposed that three layers of isolation film of a kind of nonhazardous and preparation method thereof is for solving the above problems.
Invention content
The purpose of the present invention is to provide a kind of three layers of isolation films of nonhazardous and preparation method thereof, to solve above-mentioned background skill
The problem of being proposed in art.
To achieve the above object, the present invention provides the following technical solutions：A kind of nonhazardous three layers of isolation film and its preparation side
The top layer of method, including base material, the base material is fixed with high-density polyethylene layer, and the high-density polyethylene layer top is fixed and set
There are adsorption layer, the bottom of the base material to be fixed with propylene/ethylene copolymer layer, runs through in the base material and be equipped with through-hole, and base material
Interior hollow out is equipped with air cavity, and the air cavity is interior filled with gas.
Preferably, interior on the top surface of the base material to be recessed with contact groove, fixed be bonded with is glued in the upper contact groove
Close item, on the bottom surface of the base material in be recessed with lower contact groove, it is fixed in the lower contact groove to be bonded with lower adhesive strip, it is described on
Adhesive strip and lower adhesive strip are transparent polystyrene material.
Preferably, the upper adhesive strip and lower adhesive strip are trapezium structure, and the big one end of its width is towards base material
The shape of outside, the upper contact groove and lower contact groove matches with the shape of upper adhesive strip and lower adhesive strip respectively.
Preferably, the through-hole is cylindrical structure, and height is equal to the thickness of base material.
Preferably, the base material is spliced by two identical substrate layer bondings, the inner end of two substrate layers
Multiple grooves are equipped with, and the groove of upside substrate layer corresponds to the groove of downside substrate layer respectively, which constitutes sealing
Air cavity.
Preferably, the gas being filled in the air cavity is air or pure nitrogen gas.
A kind of preparation method of three layers of isolation film of nonhazardous, includes the following steps：
Step 1：Acrylic resin 88-98%, antistatic agent 0-2% and antiblocking agent 2-10% are mixed and stirred for uniformly, being sent into
Substrate material extrusion is carried out on to single screw extrusion machine, then carries out longitudinal stretching and cross directional stretch respectively, then carry out thermal finalization
Obtain base material；
Step 2：By in the base material circulation conveying to hot press obtained in step 1, the top surface of base material and bottom end are carried out respectively
Hot pressing is slotted, to obtain upper contact groove and lower contact groove in the top surface of base material and bottom end；
Step 3：Ethylene 99.9% and ethane 0.1% are mixed after being sent into drier, with the recycle diluent one being made of n-hexane
It rises and enters back into tank reactor, catalyst uses on carrier containing titanium and manganese, triethyl aluminum as the trade mark of catalyst, is added few
The hydrogen of amount controls molecular weight, the polyethylene particle that polymer is formed；
Step 4：Polyethylene particle in step 3 is placed in second tank reactor of band and is flashed, is flashed off
Ethane in unreacted ethylene, effluent and 2% hexamethylene dilute and are cooled to 2.5MPa through two second compressions, are stayed after flash distillation
Under silt paddle recycle most of diluent through centrifugation, solid filter cake send to drier and is dried；
Step 5：The polymer powder dried out in step 4 is sent to fluidized bed drying and removes all hydrocarbon diluents, is done
Dry post-consumer polymer particle is sent to workshop section's progress extrusion stretching is kneaded, and ultimately produces high-density polyethylene layer；
Step 6：By in step 5 high-density polyethylene layer place in a mold carry out bonding block it is hot-forming, make its lower end
Adhesion has upper adhesive strip；
Step 7：Propylene/ethylene copolymer layer is made by rolling process, the conveying of propylene/ethylene copolymer layer is placed on mold
In carry out bonding block it is hot-forming, so that its lower end adhesion is had lower adhesive strip 301；
Step 8：High-density polyethylene layer obtained in step 6 and step 7 and propylene/ethylene copolymer layer are placed respectively
Both ends on manufactured base material, are bonded by hot press in step 2, ensure film integral structure, form isolation film；
Step 9：One layer of adsorption layer is fixed in the isolation film top hot pressing obtained in step 8, for adsorbing toxic granular.
Preferably, the temperature in step 3 when polymerisation is 80-95 °, pressure 1.5-2.0MPa.
Preferably, the final pressure flashed in step 4 is 0.13-0.15MPa.
Compared with prior art, the beneficial effects of the invention are as follows：
1, base material of the acrylic resin as isolation film is used in the present invention, on the basis of ensureing that isolation film is flexible, ensures it
Intensity；
2, it can ensure it in hot pressing and base by the adhesive strip structure of high-density polyethylene layer and propylene/ethylene copolymer layer
The bond properties of material ensures stability；
3, it is slotted respectively to base material top surface and bottom end by hot press in the present invention, ensures efficiency when batch production.
Description of the drawings
Fig. 1 is schematic structural view of the invention.
In figure：1 base material, contact groove on 101,102 times contact grooves, 103 through-holes, 104 air cavitys, 2 high-density polyethylene layers,
Adhesive strip, 3 propylene/ethylene copolymer layers, 301 times adhesive strips on 201.
Specific implementation mode
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation describes, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
Referring to Fig. 1, the present invention provides a kind of technical solution：A kind of three layers of isolation film of nonhazardous and preparation method thereof, packet
Base material 1 is included, the top layer of base material 1 is fixed with high-density polyethylene layer 2, and 2 top of high-density polyethylene layer is fixed with adsorption layer
4, the bottom of base material 1 is fixed with propylene/ethylene copolymer layer 3, on the top surface of base material 1 in be recessed with contact groove 101, above connect
Touch it is fixed in slot 101 be bonded with adhesive strip 201, on the bottom surface of base material 1 in be recessed with lower contact groove 102, in lower contact groove 102
Fixed to be bonded with lower adhesive strip 301, upper adhesive strip 201 and lower adhesive strip 301 are transparent polystyrene material, upper adhesive strip
201 and lower adhesive strip 301 be trapezium structure, and the big one end of its width is towards the outside of base material 1, upper contact groove 101 and under
The shape of contact groove 102 matches with the shape of upper adhesive strip 201 and lower adhesive strip 301 respectively.
Run through in the base material 1 and be equipped with through-hole 103, and hollow out is equipped with air cavity 104 in base material 1, air cavity 104 is interior filled with gas
104, through-hole 103 is cylindrical structure, and height is equal to the thickness of base material 1, and base material 1 is bonded by two identical substrate layers
It is spliced, the inner end of two substrate layers is equipped with multiple grooves, and the groove of upside substrate layer corresponds to downside base material respectively
The groove of layer, two grooves constitute the air cavity 104 of sealing, and the gas 104 being filled in air cavity 104 is air or pure nitrogen gas.
Embodiment one：
A kind of preparation method of three layers of isolation film of nonhazardous, includes the following steps：
Step 1：Acrylic resin 90%, antistatic agent 1% and antiblocking agent 9% are mixed and stirred for uniformly, to be sent to single screw rod
Substrate material extrusion is carried out on extruder, then carries out longitudinal stretching and cross directional stretch respectively, then carry out thermal finalization and obtain base material
1；
Step 2：By in 1 circulation conveying to hot press of base material obtained in step 1, respectively the top surface to base material 1 and bottom end into
Row hot pressing is slotted, to obtain upper contact groove 101 and lower contact groove 102 in the top surface of base material 1 and bottom end；
Step 3：Ethylene 99.9% and ethane 0.1% are mixed after being sent into drier, with the recycle diluent one being made of n-hexane
It rises and enters back into tank reactor, catalyst uses on carrier containing titanium and manganese, triethyl aluminum as the trade mark of catalyst, is added few
The hydrogen of amount controls molecular weight, the polyethylene particle that polymer is formed；
Step 4：Polyethylene particle in step 3 is placed in second tank reactor of band and is flashed, is flashed off
Ethane in unreacted ethylene, effluent and 2% hexamethylene dilute and are cooled to 2.5MPa through two second compressions, are stayed after flash distillation
Under silt paddle recycle most of diluent through centrifugation, solid filter cake send to drier and is dried；
Step 5：The polymer powder dried out in step 4 is sent to fluidized bed drying and removes all hydrocarbon diluents, is done
Dry post-consumer polymer particle is sent to workshop section's progress extrusion stretching is kneaded, and ultimately produces high-density polyethylene layer 2；
Step 6：By in step 5 high-density polyethylene layer 2 place in a mold carry out bonding block it is hot-forming, make its lower end
Adhesion has upper adhesive strip 201；
Step 7：Propylene/ethylene copolymer layer 3 is made by rolling process, the conveying of propylene/ethylene copolymer layer 3 is placed on mould
It is hot-forming that bonding block is carried out in tool, its lower end adhesion is made to have lower adhesive strip 301；
Step 8：High-density polyethylene layer 2 obtained and propylene/ethylene copolymer layer 3 in step 6 and step 7 are put respectively
Both ends on manufactured base material 1 are set in step 2, are bonded by hot press, ensure film integral structure, form isolation
Film；
Step 9：One layer of adsorption layer 4 is fixed in the isolation film top hot pressing obtained in step 8, for adsorbing toxic granular.
Further, the temperature in step 3 when polymerisation is 80 °, pressure 1.5MPa.
Further, the final pressure flashed in step 4 is 0.13MPa.
Embodiment two：
A kind of preparation method of three layers of isolation film of nonhazardous, includes the following steps：
Step 1：Acrylic resin 95%, antistatic agent 2% and antiblocking agent 3% are mixed and stirred for uniformly, to be sent to single screw rod
Substrate material extrusion is carried out on extruder, then carries out longitudinal stretching and cross directional stretch respectively, then carry out thermal finalization and obtain base material
1；
Step 2：By in 1 circulation conveying to hot press of base material obtained in step 1, respectively the top surface to base material 1 and bottom end into
Row hot pressing is slotted, to obtain upper contact groove 101 and lower contact groove 102 in the top surface of base material 1 and bottom end；
Step 3：Ethylene 99.9% and ethane 0.1% are mixed after being sent into drier, with the recycle diluent one being made of n-hexane
It rises and enters back into tank reactor, catalyst uses on carrier containing titanium and manganese, triethyl aluminum as the trade mark of catalyst, is added few
The hydrogen of amount controls molecular weight, the polyethylene particle that polymer is formed；
Step 4：Polyethylene particle in step 3 is placed in second tank reactor of band and is flashed, is flashed off
Ethane in unreacted ethylene, effluent and 2% hexamethylene dilute and are cooled to 2.5MPa through two second compressions, are stayed after flash distillation
Under silt paddle recycle most of diluent through centrifugation, solid filter cake send to drier and is dried；
Step 5：The polymer powder dried out in step 4 is sent to fluidized bed drying and removes all hydrocarbon diluents, is done
Dry post-consumer polymer particle is sent to workshop section's progress extrusion stretching is kneaded, and ultimately produces high-density polyethylene layer 2；
Step 6：By in step 5 high-density polyethylene layer 2 place in a mold carry out bonding block it is hot-forming, make its lower end
Adhesion has upper adhesive strip 201；
Step 7：Propylene/ethylene copolymer layer 3 is made by rolling process, the conveying of propylene/ethylene copolymer layer 3 is placed on mould
It is hot-forming that bonding block is carried out in tool, its lower end adhesion is made to have lower adhesive strip 301；
Step 8：High-density polyethylene layer 2 obtained and propylene/ethylene copolymer layer 3 in step 6 and step 7 are put respectively
Both ends on manufactured base material 1 are set in step 2, are bonded by hot press, ensure film integral structure, form isolation
Film；
Step 9：One layer of adsorption layer 4 is fixed in the isolation film top hot pressing obtained in step 8, for adsorbing toxic granular.
Further, the temperature in step 3 when polymerisation is 90 °, pressure 1.7MPa.
Further, the final pressure flashed in step 4 is 0.14MPa.
Embodiment three：
A kind of preparation method of three layers of isolation film of nonhazardous, includes the following steps：
Step 1：Acrylic resin 98% and antiblocking agent 2% are mixed and stirred for uniformly, being sent on single screw extrusion machine and carrying out
Substrate material squeezes out, and then carries out longitudinal stretching and cross directional stretch respectively, then carry out thermal finalization and obtain base material 1；
Step 2：By in 1 circulation conveying to hot press of base material obtained in step 1, respectively the top surface to base material 1 and bottom end into
Row hot pressing is slotted, to obtain upper contact groove 101 and lower contact groove 102 in the top surface of base material 1 and bottom end；
Step 3：Ethylene 99.9% and ethane 0.1% are mixed after being sent into drier, with the recycle diluent one being made of n-hexane
It rises and enters back into tank reactor, catalyst uses on carrier containing titanium and manganese, triethyl aluminum as the trade mark of catalyst, is added few
The hydrogen of amount controls molecular weight, the polyethylene particle that polymer is formed；
Step 4：Polyethylene particle in step 3 is placed in second tank reactor of band and is flashed, is flashed off
Ethane in unreacted ethylene, effluent and 2% hexamethylene dilute and are cooled to 2.5MPa through two second compressions, are stayed after flash distillation
Under silt paddle recycle most of diluent through centrifugation, solid filter cake send to drier and is dried；
Step 5：The polymer powder dried out in step 4 is sent to fluidized bed drying and removes all hydrocarbon diluents, is done
Dry post-consumer polymer particle is sent to workshop section's progress extrusion stretching is kneaded, and ultimately produces high-density polyethylene layer 2；
Step 6：By in step 5 high-density polyethylene layer 2 place in a mold carry out bonding block it is hot-forming, make its lower end
Adhesion has upper adhesive strip 201；
Step 7：Propylene/ethylene copolymer layer 3 is made by rolling process, the conveying of propylene/ethylene copolymer layer 3 is placed on mould
It is hot-forming that bonding block is carried out in tool, its lower end adhesion is made to have lower adhesive strip 301；
Step 8：High-density polyethylene layer 2 obtained and propylene/ethylene copolymer layer 3 in step 6 and step 7 are put respectively
Both ends on manufactured base material 1 are set in step 2, are bonded by hot press, ensure film integral structure, form isolation
Film；
Step 9：One layer of adsorption layer 4 is fixed in the isolation film top hot pressing obtained in step 8, for adsorbing toxic granular.
Further, the temperature in step 3 when polymerisation is 95 °, pressure 2.0MPa.
Further, the final pressure flashed in step 4 is 0.15MPa.
It although an embodiment of the present invention has been shown and described, for the ordinary skill in the art, can be with
Understanding without departing from the principles and spirit of the present invention can carry out these embodiments a variety of variations, modification, replace
And modification, the scope of the present invention is defined by the appended.
Claims (9)
1. a kind of three layers of isolation film of nonhazardous, including base material（1）, it is characterised in that：The base material（1）Top layer be fixed with height
Density polyethylene（2）, the high-density polyethylene layer（2）Top is fixed with adsorption layer（4）, the base material（1）Bottom
It is fixed with propylene/ethylene copolymer layer（3）, the base material（1）It is interior to run through equipped with through-hole（103）, and base material（1）Interior hollow out is equipped with
Air cavity（104）, the air cavity（104）It is interior filled with gas（104）.
2. three layers of isolation film of a kind of nonhazardous according to claim 1, it is characterised in that：The base material（1）Top surface on
Inside it is recessed with contact groove（101）, the upper contact groove（101）Interior fixation is bonded with adhesive strip（201）, the base material（1）
Bottom surface in be recessed with lower contact groove（102）, the lower contact groove（102）Upper fixation is bonded with lower adhesive strip（301）, described
Upper adhesive strip（201）With lower adhesive strip（301）It is transparent polystyrene material.
3. three layers of isolation film of a kind of nonhazardous according to claim 2, it is characterised in that：The upper adhesive strip（201）With
Lower adhesive strip（301）It is trapezium structure, and the big one end of its width is towards base material（1）Outside, the upper contact groove（101）
With lower contact groove（102）Shape respectively with upper adhesive strip（201）With lower adhesive strip（301）Shape match.
4. three layers of isolation film of a kind of nonhazardous according to claim 1, it is characterised in that：The through-hole（103）For cylinder
Type structure, height are equal to base material（1）Thickness.
5. three layers of isolation film of a kind of nonhazardous according to claim 1, it is characterised in that：The base material（1）It is complete by two
Exactly the same substrate layer bonding is spliced, and the inner end of two substrate layers is equipped with multiple grooves, and upside substrate layer is recessed
Slot corresponds to the groove of downside substrate layer respectively, which constitutes the air cavity of sealing（104）.
6. three layers of isolation film of a kind of nonhazardous according to claim 1, it is characterised in that：The air cavity（104）Inside it is filled with
Gas（104）For air or pure nitrogen gas.
7. according to a kind of preparation method of three layers of isolation film of nonhazardous any one of in claim 1-6, feature exists
In including the following steps：
Step 1：Acrylic resin 88-98%, antistatic agent 0-2% and antiblocking agent 2-10% are mixed and stirred for uniformly, being sent into
Substrate material extrusion is carried out on to single screw extrusion machine, then carries out longitudinal stretching and cross directional stretch respectively, then carry out thermal finalization
Obtain base material（1）；
Step 2：The base material that will be obtained in step 1（1）In circulation conveying to hot press, respectively to base material（1）Top surface and bottom
End carries out hot pressing fluting, in base material（1）Top surface and bottom end obtain contact groove（101）With lower contact groove（102）；
Step 3：Ethylene 99.9% and ethane 0.1% are mixed after being sent into drier, with the recycle diluent one being made of n-hexane
It rises and enters back into tank reactor, catalyst uses on carrier containing titanium and manganese, triethyl aluminum as the trade mark of catalyst, is added few
The hydrogen of amount controls molecular weight, the polyethylene particle that polymer is formed；
Step 4：Polyethylene particle in step 3 is placed in second tank reactor of band and is flashed, is flashed off
Ethane in unreacted ethylene, effluent and 2% hexamethylene dilute and are cooled to 2.5MPa through two second compressions, are stayed after flash distillation
Under silt paddle recycle most of diluent through centrifugation, solid filter cake send to drier and is dried；
Step 5：The polymer powder dried out in step 4 is sent to fluidized bed drying and removes all hydrocarbon diluents, is done
Dry post-consumer polymer particle is sent to workshop section's progress extrusion stretching is kneaded, and ultimately produces high-density polyethylene layer（2）；
Step 6：By the high-density polyethylene layer in step 5（2）Placement carry out in a mold bonding block it is hot-forming, make under it
End adhesion has upper adhesive strip（201）；
Step 7：Propylene/ethylene copolymer layer is made by rolling process（3）, by propylene/ethylene copolymer layer（3）Conveying is placed
It is hot-forming that bonding block is carried out in a mold, its lower end adhesion is made to have lower adhesive strip（301）；
Step 8：Respectively by high-density polyethylene layer obtained in step 6 and step 7（2）With propylene/ethylene copolymer layer
（3）It is placed on manufactured base material in step 2（1）Upper both ends, are bonded by hot press, ensure film integral structure, shape
At isolation film；
Step 9：One layer of adsorption layer is fixed in the isolation film top hot pressing obtained in step 8（4）, for adsorbing toxic granular.
8. a kind of preparation method of three layers of isolation film of nonhazardous according to claim 7, it is characterised in that：Gather in step 3
It is 80-95 ° to close temperature when reaction, pressure 1.5-2.0MPa.
9. a kind of preparation method of three layers of isolation film of nonhazardous according to claim 7, it is characterised in that：It is dodged in step 4
The final pressure of steaming is 0.13-0.15MPa.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810050932.5A CN108274870A (en) | 2018-01-19 | 2018-01-19 | A kind of three layers of isolation film of nonhazardous and preparation method thereof |
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| CN201810050932.5A CN108274870A (en) | 2018-01-19 | 2018-01-19 | A kind of three layers of isolation film of nonhazardous and preparation method thereof |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4414090A (en) * | 1981-10-01 | 1983-11-08 | Rai Research Corporation | Separator membranes for redox-type electrochemical cells |
| JPH09213295A (en) * | 1996-02-02 | 1997-08-15 | Nitto Denko Corp | Separator for battery |
| CN101296795A (en) * | 2005-10-24 | 2008-10-29 | 东燃化学株式会社 | Polyolefin multilayer microporous film, method for producing same and battery separator |
| CN104733677A (en) * | 2015-03-25 | 2015-06-24 | 中国科学院化学研究所 | Lithium-selenium battery and preparation technology thereof |
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2018
- 2018-01-19 CN CN201810050932.5A patent/CN108274870A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4414090A (en) * | 1981-10-01 | 1983-11-08 | Rai Research Corporation | Separator membranes for redox-type electrochemical cells |
| JPH09213295A (en) * | 1996-02-02 | 1997-08-15 | Nitto Denko Corp | Separator for battery |
| CN101296795A (en) * | 2005-10-24 | 2008-10-29 | 东燃化学株式会社 | Polyolefin multilayer microporous film, method for producing same and battery separator |
| CN104733677A (en) * | 2015-03-25 | 2015-06-24 | 中国科学院化学研究所 | Lithium-selenium battery and preparation technology thereof |
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